About Aden M&E PTE LTD

FR Ceiling Supporting Structure Design

The design of the framing system should be adequate for the design loads of the ceiling and floor. PROMATECT® systems have been designed for timber or steel framing as described in the system specification. For timber framing system used in loadbearing floor application, it must be designed in accordance with BS5268, AS1720.1 and/or AS1684. The width, the depth and the spacing of the joists have to be carefully specified to ensure that the timber floor will serve its intended fire performance. For steel framed ceiling systems, it is critical to adhere to the dimension of the steel sections, the grid spacing, the suspension members (if any) and the fastening methods employed. Framing members could change depending on the factors such as ceiling span, movement and deflection and local regulations. Larger or more frequent frame sections can often improve the fire and structural performance. The framing for the ceiling systems must be securely fixed back to a substrate that has an equal or greater fire performance than the ceiling. All fixings must be non-combustible and must be similar to those listed in the approval documents.

Advantages:
PROMATECT® ceiling and floor systems require less material to achieve similar fire resistant levels when compared to the industry average. This can lead to more simplified construction methods than the standard equivalent. Use of PROMATECT® therefore helps to increase productivity and reduce overall installation costs.
PROMATECT® ceiling and floor systems have been developed by Promat International to satisfy standard requirements for internal applications. Benefits include:

About Aden M&E PTE LTD

Self-supporting Membrane Ceilings

These are normally non-loadbearing and, depending on the type of construction, are used to provide protection from fire attack from below and/or above. Ceiling panels are fixed into a steel or timber framing system spanning and supported between two walls. Self-supporting membrane ceilings should normally be tested or assessed in accordance with BS476: Part 22 and/or AS1530: Part 4 to satisfy the failure criteria of integrity and insulation. These ceiling systems allow for the protection to or from services contained within the ceiling void. They will also provide protection to steel beams that are required to meet the criteria of BS476: Part 23 where exposure to fire is from below.

Board Fixing

Longitudinal board joints must coincide with framing members. If the boards are in one layer, the transverse joints must be backed with fillet strips made of PROMATECT® boards or timber noggings for traditional timber joist construction. For boards laminated in two layers, the joints must be staggered by at least 500mm. PROMATECT® boards may be fixed to the steel members using No.8 “Bugle” head self-drilling and self-tapping screws. No.8 woodscrews shall be used to fix boards to timber frame. For boards laminated in two layers, the outer layer boards may be stitched to the preceding layer with No.10 laminating screws. PROMATECT®-S may be fixed to the steel framework using M5.5 self-tapping/drilling Teks screws. Minimum edge distance to fasteners and the maximum spacing between screws must be maintained. Please refer to system detail for screw spacing requirements